The gearbox will shift without any torque intervention at all, it will just take longer.
More torque intervention = shift is faster because synchronization takes less time.
You can also increase the ramp up speed to target pressure in the gearbox and the actual shift pressure, but without damos for similar box it will be difficult to find.
Then if you reduce the torque intervention after that the shift will be about the same speed but with much less power being cut during the shift.
It helps to understand the basic of how things work
You are right, much of the operation is still not clear to me, I was looking for specific materials on how the shifting process begins, specifically for the Aisin 5-speed gearbox. However my transmission is a bit different in that it has mechanical wear, so it's not shifting the same compared to a well taken care of transmission. In fact, I might be replacing it in the near future, but I wanted more information to compare how the shifting process is compared to a decently working and well shifting AW55. I have flushed it many times to get it working well, I've added Lubeguard too. I've even modified the adaptations with custom values to see how the shift process is affected.
As you know, I have not needed DAMOS before to figure out things, it just takes more time. I have identified quite a few important maps already in the TCM. Once I get an SBL or write my own, I can tweak the things I have identified.